# WARNING "failed to prepare/warm" after upgrading from 0.90.3 to 0.90.10

**URL:** <https://discuss.elastic.co/t/warning-failed-to-prepare-warm-after-upgrading-from-0-90-3-to-0-90-10/15274>\
**Category:** Elasticsearch\
**Created:** [January 16, 2014, 4:49pm UTC](https://discuss.elastic.co/t/warning-failed-to-prepare-warm-after-upgrading-from-0-90-3-to-0-90-10/15274 "2014-01-16T16:49:24Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![Benoit](https://avatars.discourse-cdn.com/v4/letter/b/5daacb/32.png) [@Benoit](https://discuss.elastic.co/u/Benoit)\
**Post date:** [January 16, 2014, 4:49pm UTC](https://discuss.elastic.co/t/warning-failed-to-prepare-warm-after-upgrading-from-0-90-3-to-0-90-10/15274/1 "2014-01-16T16:49:24Z")

</div>

Hello,

I'm making some test to upgrade from 0.90.3 to 0.90.10

Everything looks good except the following warning in log, below two  
examples.

[2014-01-16 17:27:00,669][WARN][index.engine.robin] [integration]  
[m112][0] failed to prepare/warm  
java.lang.IllegalMonitorStateException  
at java.lang.Object.wait(Native Method)  
at java.lang.Object.wait(Object.java:485)  
at  
org.elasticsearch.search.SearchService$SearchWarmer$2.awaitTermination(SearchService.java:822)  
at  
org.elasticsearch.indices.warmer.InternalIndicesWarmer.warm(InternalIndicesWarmer.java:99)  
at  
org.elasticsearch.index.engine.robin.RobinEngine$RobinSearchFactory.newSearcher(RobinEngine.java:1652)  
at  
org.apache.lucene.search.SearcherManager.getSearcher(SearcherManager.java:155)  
at  
org.apache.lucene.search.SearcherManager.(SearcherManager.java:89)  
at  
org.elasticsearch.index.engine.robin.RobinEngine.buildSearchManager(RobinEngine.java:1530)  
at  
org.elasticsearch.index.engine.robin.RobinEngine.start(RobinEngine.java:277)  
at  
org.elasticsearch.index.shard.service.InternalIndexShard.performRecoveryPrepareForTranslog(InternalIndexShard.java:660)  
at  
org.elasticsearch.index.gateway.local.LocalIndexShardGateway.recover(LocalIndexShardGateway.java:201)  
at  
org.elasticsearch.index.gateway.IndexShardGatewayService$1.run(IndexShardGatewayService.java:174)  
at  
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)  
at  
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)  
at java.lang.Thread.run(Thread.java:662)

[2014-01-16 11:17:36,836][WARN][index.engine.robin] [sissor2-pp]  
[m105][0] failed to prepare/warm  
java.lang.IllegalMonitorStateException  
at java.lang.Object.wait(Native Method)  
at java.lang.Object.wait(Object.java:503)  
at  
org.elasticsearch.search.SearchService$SearchWarmer$2.awaitTermination(SearchService.java:822)  
at  
org.elasticsearch.indices.warmer.InternalIndicesWarmer.warm(InternalIndicesWarmer.java:99)  
at  
org.elasticsearch.index.engine.robin.RobinEngine$RobinSearchFactory.newSearcher(RobinEngine.java:1652)  
at  
org.apache.lucene.search.SearcherManager.getSearcher(SearcherManager.java:155)  
at  
org.apache.lucene.search.SearcherManager.(SearcherManager.java:89)  
at  
org.elasticsearch.index.engine.robin.RobinEngine.buildSearchManager(RobinEngine.java:1530)  
at  
org.elasticsearch.index.engine.robin.RobinEngine.start(RobinEngine.java:277)  
at  
org.elasticsearch.index.shard.service.InternalIndexShard.performRecoveryPrepareForTranslog(InternalIndexShard.java:660)  
at  
org.elasticsearch.indices.recovery.RecoveryTarget$PrepareForTranslogOperationsRequestHandler.messageReceived(RecoveryTarget.java:389)  
at  
org.elasticsearch.indices.recovery.RecoveryTarget$PrepareForTranslogOperationsRequestHandler.messageReceived(RecoveryTarget.java:363)  
at  
org.elasticsearch.transport.netty.MessageChannelHandler$RequestHandler.run(MessageChannelHandler.java:270)  
at  
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)  
at  
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)  
at java.lang.Thread.run(Thread.java:722)

Anybody encounter this problem ?

Thanks.

Benoît

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<div class="post-metadata">

**Author:** ![Benoit](https://avatars.discourse-cdn.com/v4/letter/b/5daacb/32.png) [@Benoit](https://discuss.elastic.co/u/Benoit)\
**Post date:** [January 17, 2014, 9:53am UTC](https://discuss.elastic.co/t/warning-failed-to-prepare-warm-after-upgrading-from-0-90-3-to-0-90-10/15274/2 "2014-01-17T09:53:00Z")

</div>

Am I the only one to have this warning ?

This make me not confident to upgrade to 0.90.10, should I open an issue ?

Benoît

On Thursday, January 16, 2014 5:49:24 PM UTC+1, Benoît wrote:

> Hello,
> 
> I'm making some test to upgrade from 0.90.3 to 0.90.10
> 
> Everything looks good except the following warning in log, below two  
> examples.
> 
> [2014-01-16 17:27:00,669][WARN][index.engine.robin] [integration]  
> [m112][0] failed to prepare/warm  
> java.lang.IllegalMonitorStateException  
> at java.lang.Object.wait(Native Method)  
> at java.lang.Object.wait(Object.java:485)  
> at  
> org.elasticsearch.search.SearchService$SearchWarmer$2.awaitTermination(SearchService.java:822)  
> at  
> org.elasticsearch.indices.warmer.InternalIndicesWarmer.warm(InternalIndicesWarmer.java:99)  
> at  
> org.elasticsearch.index.engine.robin.RobinEngine$RobinSearchFactory.newSearcher(RobinEngine.java:1652)  
> at  
> org.apache.lucene.search.SearcherManager.getSearcher(SearcherManager.java:155)  
> at  
> org.apache.lucene.search.SearcherManager.(SearcherManager.java:89)  
> at  
> org.elasticsearch.index.engine.robin.RobinEngine.buildSearchManager(RobinEngine.java:1530)  
> at  
> org.elasticsearch.index.engine.robin.RobinEngine.start(RobinEngine.java:277)  
> at  
> org.elasticsearch.index.shard.service.InternalIndexShard.performRecoveryPrepareForTranslog(InternalIndexShard.java:660)  
> at  
> org.elasticsearch.index.gateway.local.LocalIndexShardGateway.recover(LocalIndexShardGateway.java:201)  
> at  
> org.elasticsearch.index.gateway.IndexShardGatewayService$1.run(IndexShardGatewayService.java:174)  
> at  
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)  
> at  
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)  
> at java.lang.Thread.run(Thread.java:662)
> 
> [2014-01-16 11:17:36,836][WARN][index.engine.robin] [sissor2-pp]  
> [m105][0] failed to prepare/warm  
> java.lang.IllegalMonitorStateException  
> at java.lang.Object.wait(Native Method)  
> at java.lang.Object.wait(Object.java:503)  
> at  
> org.elasticsearch.search.SearchService$SearchWarmer$2.awaitTermination(SearchService.java:822)  
> at  
> org.elasticsearch.indices.warmer.InternalIndicesWarmer.warm(InternalIndicesWarmer.java:99)  
> at  
> org.elasticsearch.index.engine.robin.RobinEngine$RobinSearchFactory.newSearcher(RobinEngine.java:1652)  
> at  
> org.apache.lucene.search.SearcherManager.getSearcher(SearcherManager.java:155)  
> at  
> org.apache.lucene.search.SearcherManager.(SearcherManager.java:89)  
> at  
> org.elasticsearch.index.engine.robin.RobinEngine.buildSearchManager(RobinEngine.java:1530)  
> at  
> org.elasticsearch.index.engine.robin.RobinEngine.start(RobinEngine.java:277)  
> at  
> org.elasticsearch.index.shard.service.InternalIndexShard.performRecoveryPrepareForTranslog(InternalIndexShard.java:660)  
> at  
> org.elasticsearch.indices.recovery.RecoveryTarget$PrepareForTranslogOperationsRequestHandler.messageReceived(RecoveryTarget.java:389)  
> at  
> org.elasticsearch.indices.recovery.RecoveryTarget$PrepareForTranslogOperationsRequestHandler.messageReceived(RecoveryTarget.java:363)  
> at  
> org.elasticsearch.transport.netty.MessageChannelHandler$RequestHandler.run(MessageChannelHandler.java:270)  
> at  
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)  
> at  
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)  
> at java.lang.Thread.run(Thread.java:722)
> 
> Anybody encounter this problem ?
> 
> Thanks.
> 
> Benoît

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<div class="post-metadata">

**Author:** ![Emilie\_Lavigne](https://avatars.discourse-cdn.com/v4/letter/e/91b2a8/32.png) [@Emilie\_Lavigne](https://discuss.elastic.co/u/Emilie_Lavigne)\
**Post date:** [January 21, 2014, 8:16pm UTC](https://discuss.elastic.co/t/warning-failed-to-prepare-warm-after-upgrading-from-0-90-3-to-0-90-10/15274/3 "2014-01-21T20:16:06Z")

</div>

I'm having the same problem and would really love to know if there's a fix  
for it.

On Friday, January 17, 2014 4:53:00 AM UTC-5, Benoît wrote:

> Am I the only one to have this warning ?
> 
> This make me not confident to upgrade to 0.90.10, should I open an issue ?
> 
> Benoît
> 
> On Thursday, January 16, 2014 5:49:24 PM UTC+1, Benoît wrote:
> 
> > Hello,
> > 
> > I'm making some test to upgrade from 0.90.3 to 0.90.10
> > 
> > Everything looks good except the following warning in log, below two  
> > examples.
> > 
> > [2014-01-16 17:27:00,669][WARN][index.engine.robin] [integration]  
> > [m112][0] failed to prepare/warm  
> > java.lang.IllegalMonitorStateException  
> > at java.lang.Object.wait(Native Method)  
> > at java.lang.Object.wait(Object.java:485)  
> > at  
> > org.elasticsearch.search.SearchService$SearchWarmer$2.awaitTermination(SearchService.java:822)  
> > at  
> > org.elasticsearch.indices.warmer.InternalIndicesWarmer.warm(InternalIndicesWarmer.java:99)  
> > at  
> > org.elasticsearch.index.engine.robin.RobinEngine$RobinSearchFactory.newSearcher(RobinEngine.java:1652)  
> > at  
> > org.apache.lucene.search.SearcherManager.getSearcher(SearcherManager.java:155)  
> > at  
> > org.apache.lucene.search.SearcherManager.(SearcherManager.java:89)  
> > at  
> > org.elasticsearch.index.engine.robin.RobinEngine.buildSearchManager(RobinEngine.java:1530)  
> > at  
> > org.elasticsearch.index.engine.robin.RobinEngine.start(RobinEngine.java:277)  
> > at  
> > org.elasticsearch.index.shard.service.InternalIndexShard.performRecoveryPrepareForTranslog(InternalIndexShard.java:660)  
> > at  
> > org.elasticsearch.index.gateway.local.LocalIndexShardGateway.recover(LocalIndexShardGateway.java:201)  
> > at  
> > org.elasticsearch.index.gateway.IndexShardGatewayService$1.run(IndexShardGatewayService.java:174)  
> > at  
> > java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)  
> > at  
> > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)  
> > at java.lang.Thread.run(Thread.java:662)
> > 
> > [2014-01-16 11:17:36,836][WARN][index.engine.robin] [sissor2-pp]  
> > [m105][0] failed to prepare/warm  
> > java.lang.IllegalMonitorStateException  
> > at java.lang.Object.wait(Native Method)  
> > at java.lang.Object.wait(Object.java:503)  
> > at  
> > org.elasticsearch.search.SearchService$SearchWarmer$2.awaitTermination(SearchService.java:822)  
> > at  
> > org.elasticsearch.indices.warmer.InternalIndicesWarmer.warm(InternalIndicesWarmer.java:99)  
> > at  
> > org.elasticsearch.index.engine.robin.RobinEngine$RobinSearchFactory.newSearcher(RobinEngine.java:1652)  
> > at  
> > org.apache.lucene.search.SearcherManager.getSearcher(SearcherManager.java:155)  
> > at  
> > org.apache.lucene.search.SearcherManager.(SearcherManager.java:89)  
> > at  
> > org.elasticsearch.index.engine.robin.RobinEngine.buildSearchManager(RobinEngine.java:1530)  
> > at  
> > org.elasticsearch.index.engine.robin.RobinEngine.start(RobinEngine.java:277)  
> > at  
> > org.elasticsearch.index.shard.service.InternalIndexShard.performRecoveryPrepareForTranslog(InternalIndexShard.java:660)  
> > at  
> > org.elasticsearch.indices.recovery.RecoveryTarget$PrepareForTranslogOperationsRequestHandler.messageReceived(RecoveryTarget.java:389)  
> > at  
> > org.elasticsearch.indices.recovery.RecoveryTarget$PrepareForTranslogOperationsRequestHandler.messageReceived(RecoveryTarget.java:363)  
> > at  
> > org.elasticsearch.transport.netty.MessageChannelHandler$RequestHandler.run(MessageChannelHandler.java:270)  
> > at  
> > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)  
> > at  
> > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)  
> > at java.lang.Thread.run(Thread.java:722)
> > 
> > Anybody encounter this problem ?
> > 
> > Thanks.
> > 
> > Benoît

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<div class="post-metadata">

**Author:** ![Benoit](https://avatars.discourse-cdn.com/v4/letter/b/5daacb/32.png) [@Benoit](https://discuss.elastic.co/u/Benoit)\
**Post date:** [January 22, 2014, 3:47pm UTC](https://discuss.elastic.co/t/warning-failed-to-prepare-warm-after-upgrading-from-0-90-3-to-0-90-10/15274/4 "2014-01-22T15:47:33Z")

</div>

Thank you for your feedback, i'm happy to know that i'm not alone.

I will report it as an issue.

Benoît

On Tuesday, January 21, 2014 9:16:06 PM UTC+1, Emilie Lavigne wrote:

> I'm having the same problem and would really love to know if there's a fix  
> for it.
> 
> On Friday, January 17, 2014 4:53:00 AM UTC-5, Benoît wrote:
> 
> > Am I the only one to have this warning ?
> > 
> > This make me not confident to upgrade to 0.90.10, should I open an issue ?
> > 
> > Benoît
> > 
> > On Thursday, January 16, 2014 5:49:24 PM UTC+1, Benoît wrote:
> > 
> > > Hello,
> > > 
> > > I'm making some test to upgrade from 0.90.3 to 0.90.10
> > > 
> > > Everything looks good except the following warning in log, below two  
> > > examples.
> > > 
> > > [2014-01-16 17:27:00,669][WARN][index.engine.robin]  
> > > [integration] [m112][0] failed to prepare/warm  
> > > java.lang.IllegalMonitorStateException  
> > > at java.lang.Object.wait(Native Method)  
> > > at java.lang.Object.wait(Object.java:485)  
> > > at  
> > > org.elasticsearch.search.SearchService$SearchWarmer$2.awaitTermination(SearchService.java:822)  
> > > at  
> > > org.elasticsearch.indices.warmer.InternalIndicesWarmer.warm(InternalIndicesWarmer.java:99)  
> > > at  
> > > org.elasticsearch.index.engine.robin.RobinEngine$RobinSearchFactory.newSearcher(RobinEngine.java:1652)  
> > > at  
> > > org.apache.lucene.search.SearcherManager.getSearcher(SearcherManager.java:155)  
> > > at  
> > > org.apache.lucene.search.SearcherManager.(SearcherManager.java:89)  
> > > at  
> > > org.elasticsearch.index.engine.robin.RobinEngine.buildSearchManager(RobinEngine.java:1530)  
> > > at  
> > > org.elasticsearch.index.engine.robin.RobinEngine.start(RobinEngine.java:277)  
> > > at  
> > > org.elasticsearch.index.shard.service.InternalIndexShard.performRecoveryPrepareForTranslog(InternalIndexShard.java:660)  
> > > at  
> > > org.elasticsearch.index.gateway.local.LocalIndexShardGateway.recover(LocalIndexShardGateway.java:201)  
> > > at  
> > > org.elasticsearch.index.gateway.IndexShardGatewayService$1.run(IndexShardGatewayService.java:174)  
> > > at  
> > > java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)  
> > > at  
> > > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)  
> > > at java.lang.Thread.run(Thread.java:662)
> > > 
> > > [2014-01-16 11:17:36,836][WARN][index.engine.robin] [sissor2-pp]  
> > > [m105][0] failed to prepare/warm  
> > > java.lang.IllegalMonitorStateException  
> > > at java.lang.Object.wait(Native Method)  
> > > at java.lang.Object.wait(Object.java:503)  
> > > at  
> > > org.elasticsearch.search.SearchService$SearchWarmer$2.awaitTermination(SearchService.java:822)  
> > > at  
> > > org.elasticsearch.indices.warmer.InternalIndicesWarmer.warm(InternalIndicesWarmer.java:99)  
> > > at  
> > > org.elasticsearch.index.engine.robin.RobinEngine$RobinSearchFactory.newSearcher(RobinEngine.java:1652)  
> > > at  
> > > org.apache.lucene.search.SearcherManager.getSearcher(SearcherManager.java:155)  
> > > at  
> > > org.apache.lucene.search.SearcherManager.(SearcherManager.java:89)  
> > > at  
> > > org.elasticsearch.index.engine.robin.RobinEngine.buildSearchManager(RobinEngine.java:1530)  
> > > at  
> > > org.elasticsearch.index.engine.robin.RobinEngine.start(RobinEngine.java:277)  
> > > at  
> > > org.elasticsearch.index.shard.service.InternalIndexShard.performRecoveryPrepareForTranslog(InternalIndexShard.java:660)  
> > > at  
> > > org.elasticsearch.indices.recovery.RecoveryTarget$PrepareForTranslogOperationsRequestHandler.messageReceived(RecoveryTarget.java:389)  
> > > at  
> > > org.elasticsearch.indices.recovery.RecoveryTarget$PrepareForTranslogOperationsRequestHandler.messageReceived(RecoveryTarget.java:363)  
> > > at  
> > > org.elasticsearch.transport.netty.MessageChannelHandler$RequestHandler.run(MessageChannelHandler.java:270)  
> > > at  
> > > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)  
> > > at  
> > > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)  
> > > at java.lang.Thread.run(Thread.java:722)
> > > 
> > > Anybody encounter this problem ?
> > > 
> > > Thanks.
> > > 
> > > Benoît

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<div class="post-metadata">

**Author:** ![Benoit](https://avatars.discourse-cdn.com/v4/letter/b/5daacb/32.png) [@Benoit](https://discuss.elastic.co/u/Benoit)\
**Post date:** [January 22, 2014, 3:55pm UTC](https://discuss.elastic.co/t/warning-failed-to-prepare-warm-after-upgrading-from-0-90-3-to-0-90-10/15274/5 "2014-01-22T15:55:09Z")

</div>

On Wednesday, January 22, 2014 4:47:33 PM UTC+1, Benoît wrote:

> Thank you for your feedback, i'm happy to know that i'm not alone.
> 
> I will report it as an issue.

Done.

> <https://github.com/elastic/elasticsearch/issues/4849>
>
> I have check release note from 0.90.3 to 0.90.10 to see if warmer need some chan…ge, but nothing.
> 
> Initially reported on ML : https://groups.google.com/d/msg/elasticsearch/xkX5RVII-Gk/BRd28\_zbZUIJ
> 
> Two samples stack trace :
> 
> \`\`\`
> \[2014-01-16 17:27:00,669\]\[WARN \]\[index.engine.robin \] \[integration\] \[m112\]\[0\] failed to prepare/warm
> java.lang.IllegalMonitorStateException
> at java.lang.Object.wait(Native Method)
> at java.lang.Object.wait(Object.java:485)
> at org.elasticsearch.search.SearchService$SearchWarmer$2.awaitTermination(SearchService.java:822)
> at org.elasticsearch.indices.warmer.InternalIndicesWarmer.warm(InternalIndicesWarmer.java:99)
> at org.elasticsearch.index.engine.robin.RobinEngine$RobinSearchFactory.newSearcher(RobinEngine.java:1652)
> at org.apache.lucene.search.SearcherManager.getSearcher(SearcherManager.java:155)
> at org.apache.lucene.search.SearcherManager.\<init\>(SearcherManager.java:89)
> at org.elasticsearch.index.engine.robin.RobinEngine.buildSearchManager(RobinEngine.java:1530)
> at org.elasticsearch.index.engine.robin.RobinEngine.start(RobinEngine.java:277)
> at org.elasticsearch.index.shard.service.InternalIndexShard.performRecoveryPrepareForTranslog(InternalIndexShard.java:660)
> at org.elasticsearch.index.gateway.local.LocalIndexShardGateway.recover(LocalIndexShardGateway.java:201)
> at org.elasticsearch.index.gateway.IndexShardGatewayService$1.run(IndexShardGatewayService.java:174)
> at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:662)
> \`\`\`
> 
> \`\`\`
> \[2014-01-16 11:17:36,836\]\[WARN \]\[index.engine.robin \] \[sissor2-pp\] \[m105\]\[0\] failed to prepare/warm
> java.lang.IllegalMonitorStateException
> at java.lang.Object.wait(Native Method)
> at java.lang.Object.wait(Object.java:503)
> at org.elasticsearch.search.SearchService$SearchWarmer$2.awaitTermination(SearchService.java:822)
> at org.elasticsearch.indices.warmer.InternalIndicesWarmer.warm(InternalIndicesWarmer.java:99)
> at org.elasticsearch.index.engine.robin.RobinEngine$RobinSearchFactory.newSearcher(RobinEngine.java:1652)
> at org.apache.lucene.search.SearcherManager.getSearcher(SearcherManager.java:155)
> at org.apache.lucene.search.SearcherManager.\<init\>(SearcherManager.java:89)
> at org.elasticsearch.index.engine.robin.RobinEngine.buildSearchManager(RobinEngine.java:1530)
> at org.elasticsearch.index.engine.robin.RobinEngine.start(RobinEngine.java:277)
> at org.elasticsearch.index.shard.service.InternalIndexShard.performRecoveryPrepareForTranslog(InternalIndexShard.java:660)
> at org.elasticsearch.indices.recovery.RecoveryTarget$PrepareForTranslogOperationsRequestHandler.messageReceived(RecoveryTarget.java:389)
> at org.elasticsearch.indices.recovery.RecoveryTarget$PrepareForTranslogOperationsRequestHandler.messageReceived(RecoveryTarget.java:363)
> at org.elasticsearch.transport.netty.MessageChannelHandler$RequestHandler.run(MessageChannelHandler.java:270)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:722)
> \`\`\`

Benoît

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---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 6, 2017, 1:55am UTC](https://discuss.elastic.co/t/warning-failed-to-prepare-warm-after-upgrading-from-0-90-3-to-0-90-10/15274/6 "2017-07-06T01:55:22Z")

</div>